Case has more fans than headers on the MB. Best solution?

Solution
Zerk2012 has spotted the issue and solution - IF you like it.

The issue is that this case comes, apparently, with 5 fans ALL with connectors for Molex power outputs directly from the PSU. This means that all of those fans will run at full speed all the time. Further, those connectors cannot plug into a mobo fan header, so your mobo cannot do any control on them. If you don't like that, you have two choices: (a) buy other fans and replace all the ones that come with the case; or, (b) try to buy some standard fan 3-pin female connectors and replace all the case fans' Molex connectors with those - then you could plug them into a mobo header for automatic control ONLY IF the header operates in Voltage Control Mode (aka DC Mode), and NOT in...

Paperdoc

Polypheme
Ambassador
Zerk2012 has spotted the issue and solution - IF you like it.

The issue is that this case comes, apparently, with 5 fans ALL with connectors for Molex power outputs directly from the PSU. This means that all of those fans will run at full speed all the time. Further, those connectors cannot plug into a mobo fan header, so your mobo cannot do any control on them. If you don't like that, you have two choices: (a) buy other fans and replace all the ones that come with the case; or, (b) try to buy some standard fan 3-pin female connectors and replace all the case fans' Molex connectors with those - then you could plug them into a mobo header for automatic control ONLY IF the header operates in Voltage Control Mode (aka DC Mode), and NOT in PWM Mode. And you're in luck! On p. 14 of your mobo manual the labels on the three SYS_FAN headers indicate that they all use Voltage Control Mode. So, using three splitters, you could arrange to power and control automatically up to six 3-pin fans (two per header). IF you do this, look up the proper connections for 3-pin fans. Then remember that your case's fans come only with two power wires - Ground and +12 VDC (or varying Voltage) - and have no yellow wire for the speed signal. Thus your mobo will not receive any speed signals from these fans and MAY warn you (wrongly) that they have failed. Note this also. Some of those fans have LEDs in them, and those usually are just powered from the same sire as the motor. As designed, that's fine becasue the motor supply is supposed to be 12 VDC. BUT if you alter them and connect to a mobo header that reduces voltage to reduce motor speed, those LED's may get dim as the motor runs slowly.

As supplied, the connectors are "stacking" - that is, the back end is a female output connector to plug in the next fan. So, IF you keep the original fans and forget automatic control, you really only "consume" one PSU Molex output female to power all the fans.
 
Solution